Abstract:
A method of transmitting data packets within a local network including a master unit and at least two slave units is adapted to a configuration according to which the master unit comprises two processors. The first processor executes an application and the second processor controls a transmission of data between the master unit and any one of the slave units. According to the method, data packets sent by a first slave unit to a second slave unit pass through the second processor and are forwarded directly in accordance with a readdressing directive obtained from addressing elements which are interassociated and communicated by the first processor to the second processor.
Abstract:
An integrated circuit including one or several metallization levels, metal conductive strips and metal contact pads being formed on the last metallization level, the last level being covered with a passivation layer in which are formed openings above the contact pads. The thickness of the pads, at least at the level of their portions not covered by the passivation layer, is smaller than the thickness of said conductive strips.
Abstract:
Circuitry including an output circuit having a first variable resistance block coupled between a first supply voltage and an output node, the first variable resistance block having a plurality of selectable resistive elements coupled in series with at least one resistor between the first supply voltage and the output node, the output circuit having an output impedance determined by the resistance of the first variable resistance block; and a compensation circuit for regulating the impedance of the first variable resistance block of the output circuit, the compensation circuit having a second variable resistance block coupled between the first supply voltage and the first node of an external resistor, the second node of the external resistor being coupled to a second supply voltage, wherein the second variable resistance block comprises a plurality of selectable resistive elements coupled in series with at least one resistor between the first supply voltage and the first node of the external resistor, and wherein the plurality of selectable resistive elements of the first and second variable resistance blocks are selected based on a voltage level at the first node of the external resistor.
Abstract:
A porous silicon wafer including, on its upper surface side, multiple recesses, this upper surface being coated with a porous silicon layer having pores smaller than those of the wafer bulk.
Abstract:
An adaptive predistorter for applying a predistortion gain to an input signal to be amplified by a power amplifier having a variable supply voltage, the predistorter including: a predistortion gain block adapted to apply a complex gain to a complex input signal; a first table implemented in a first memory and comprising a 2-dimensional array of cells storing complex gain values, the first table adapted to output the complex gain values based on an amplitude of the input signal and the value of the variable supply voltage of the power amplifier; and a second table implemented in a second memory and including a 2-dimensional array of cells storing gain update values for updating the complex gain values of the first table, the gain update values being generated based on an output signal of said power amplifier.
Abstract:
An integrated circuit includes at least one photodiode associated with a read transistor. The photodiode is formed from a stack of three semiconductor layers comprising a buried layer, an floating substrate layer and an upper layer. The drain region and/or the source region of the transistor are incorporated within the upper layer. The buried layer is electrically isolated from the upper layer so as to allow the buried layer to be biased independently of the upper layer.
Abstract:
The invention relates to a device for controlling the speed and the rotation direction of an asynchronous motor (1), comprising a first circuit (7) with two bi-directional switches (T′4, T′5) individually controlled and having first conducting terminals connected to a common terminal (6) for applying a direct potential (Vcc) and having second conducting terminals that can be respectively connected to the first ends (12, 14) of windings (15, 16) of the motor stator, and a second circuit (3′) with at least two parallel bi-directional switches (T1, T2, T3) individually controlled and having first respective conducting terminals (Ki) connected to the common terminal.
Abstract:
A photodiode includes a first doped layer and a second doped layer that share a common face. A deep isolation trench has a face contiguous with the first and second doped layers. A conducting layer is in contact with a free face of the second doped layer. A protective layer is provided at an interface with the first doped layer and second doped layer. This protective layer is capable of generating a layer of negative charge at the interface. The protective layer may further be positioned within the second doped layer to form an intermediate protective structure.
Abstract:
A method for forming a component of TMBS type having its periphery formed of a trench with insulated walls filled with a conductor, including the steps of depositing on a semiconductor substrate a thick layer of a first insulating material and a thin layer of a second material; simultaneously digging a peripheral trench and the trenches of the component; isotropically etching the first material so that a cap overhanging a recess remains; forming a thin insulating layer; and filling the trenches and said recess with a conductive material.
Abstract:
A method and circuit to control a circuit for addressing at least one line electrode of a plasma display panel having, for each line, a line selection stage formed of two switches in series between two input terminals of the selection stage, the method including alternating use of the two switches of the selection stage of each line to flow a current from or to an inductive element of the addressing circuit without connecting the input terminals together.